Shaft lining



c. F. SHERWOOD I SHAFT LINING' Filed June 23; 1921 jmvemtaw Alfmzmya Patented Get. 7, P924.

oLEs F. SHERWOOD, or MILL VALLEY, CALIFORNIA.

SHAFT LINING.

Application filed June 23, 1921. Serial No. 479,719.

To all whom it may concem:

Be it known that I CHARLES F. SHER- WOOD, a citizen of the Ilnited States, residing at Mill Valley, Marin County, State of California, have invented new and useful Improvements. in Shaft Linings, of which the following is a specification.

My invention relates to shafts or other rotating members adapted to be carried in bearings, and has for its principal object the protection and lubrication of such shaft especially in wet locations.

A further object is the economy resulting from its use in that my rubber bushing on the shaft journal is most easily and cheaply applied or removed or renewed.

Reference is made to my two co-pending applications Serial No. 360,702, filed Feb. 24', 1920, and Serial No. 360,703 filed February 24, 1920. In these applications I show a rubber or elastic bearing which supports a rotating shaft and in which the bearing surface may have a spiral or other grooving on its surface suitable for conveying.

lubricant through the bearing so that a lubricant film is established and maintained elastic or'yielding material may be used as a shaft lining, and when so used has the advantage of equalizing the support over the entire length of. the shaft within the bearin because of the flexibility of the rub ber. ther advantages are pointed out in my co-pending applications above referred to By placing a rubber lining over the shaft or otherwise sheathing the shaft with a rubber surface,and providing'a spiral or other channel for passing lubricant through or across the journal surface, a forcing or pumping action is thereby set up when the' shaft is rotated, which results in a forced circulation of the lubricant and the maintenance of lubrication at all times. Furthermore, with every revolution of the shaft the entire bearing surface is wetted, and a lu-- bricant filmwill be constantly maintained as between the rubber shaft face and the bearing surface. By providing rubber on the shaft surface, a minimum of wear is secured and a freedom from friction because of the relatively long life of rubber. or grit will not embed itself in my rubber lined shaft as readily as in a metallic shaft surface, and thus I prevent cutting and scoring of the bearing.

In the drawings:

Fi ure 1 is a part section and part view of a caring pedestal, in which the shaft is shown provided with a rubber bushing or lining, and having a spiral projection of rubber for contacting with the. bearing and showing an inlet and outlet for water or other fluid serving as a lubricant.

Fig. 2 is a section of, a bearing with the shaft having my invention applied, these are shown in view, the bearing in this case being of metal.

Fig. 3 is similar to Fig. 2 except the bearing is shown as of rubber.

Throughout the figures similar numerals refer to ldentical parts.

A pedestal is represented by 1 within. which is mounted a bearing shell 2 which may be the well known metal sleeve or may advantageously be made of rubber as described below. IWithin this sleeve the shaft 3 is adapted to rotate, said shaft having a rubber or other elastic surface lining 4 forming a journal and vulcanized or otherwise aiiixed thereto. The surface of the journal is provided preferably with a spiral channel 5 extending the length of the bearing and which channel is adapted to convey lubricant which may enter the channel through the inlet pipe 6 and be discharged at the annular well 7 and thence through the dis charge pipe 8. If desireda groove 9 may be cut in the shaft to provide interruption in the surface so as to secure the dischar e of the lubricant into the well 7 by centri ugal force.

Instead of a spiral channel 5 on the surface of the journal a tortuous passage, or any other form of grooving may be provided on the rubber surface of the shaft, or the said journal surface may be in the form of 105 Sand 60 atlases face of the shaft journal channeled for lubricant and this desired'result may be accomplished in a variety of forms.

A packing gland of any well known form may be provided if necessary, at 10 which upon tightening the nut 11 will compress the packing material 12 and thus prevent leakage. channel 5 may be under pressure or supplied in a variety of ways, and'will then travel in the channel 5 lubricating the running joint between the journal and the hearing. If this channel be of spiral" form, a pumpin action will be set up by the rotating s aft, resulting in a forced circulation of the lubricant through the spiral channel and the. rate of flow may be con trolled by manipulatin valves as 14 or 15 on the supply and disc arge pipes. 7 In Figure 2 l have shown a form without supply and discharge pipes, this form being particularly adapted-to water apparatus as pump turbines and the like, wherein the fluid'employed in the apparatus may readily be employed as thelubricant finding its way from the easing into the joint between the bearing and 'ournal and thence along the grooving of t e journal surface.

lln lF1gure 3 is shown a modification wherein the bearing surface is of rubber at 13 as well as the journal bushing or sheathin and which form'll have found particw lar y advantageous for said pumps and the like, and in some'instan'ces'for corrosive solutions. l claim" 1. In combination with a shaft, a bushing of elastic material forming a journal on said shaft and adapted to rotate within a bearing.

2. In combination with a shaft, a bushing of rubber fixed to said shaft and forming a journal constructed and adapted to rotate within a bearing. f

- 3'. A shaft and journal asset forth in claim 1, wherein the surface of the journal bushing is grooved for the passage of lubricant.

t; A shaft and journal as set forth in The lubricant which enters the claim 2, wherein the surface of the journal bushing is grooved for the passage of lubricant.

5. A shaft and'journal as set forth in claim 1 wherein said journal surface is provided with a spiral groove adapted to pass fluid lubricant therethroughl 6. It haft and journal as set forth in claim 2, wherein said journal surface is provided with a spiral groove adaptedto pass fluid lubricant therethrough.

' 7. In combination with a shaft and a bearing adapted to support said shaft, an elastic sleeve fixed on said shaft and adapted to rotate in said bearing.

-' 8. In combination with a shaft and a bearing adapted to support said shaft, an elastic sleeve fixed on said shaft and adapted to rotate in said bearing, and surface indentations in said sleevefor a tortuous passage adapted to o: m; t lurieant between said sleeve and said bearing.

' 9. lln combination with a shaft and a hearing adapted to support said shaft, an' elastic sleeve fixed on said shaft and adapted to till rotate in said bear a and a spiral groove in said sleeve to pass lubricant to the running jointbetween the sleeve andthe bearin %O. In combination with a shaft and a bearing adapted to support said shaft, a rubber sleeve fixed on said shaft and adapted to rotate in said bear,

11. lln combination with a shaft and a bearing adapted to support saidshaft, a rubber sleeve fixed on said shaft and adapted to rotate in said bearing, and surface indentations-in said sleeve-forminga tertuous passage adapted to m lubricant between said sleeve and said 12., lln combination with. a shaft and a bearing adapted to support said shaft, a rubber sleeve fixed on said shaft and adapted to" rotate in said bearing, and a spiral groove in said sleeve to pass ubricant to'the rune u r r i r r, smnwoon,

g joint between the sleeve the bear- 

